* arm-tdep.c: Include features/arm-with-m.c.

	(arm_psr_thumb_bit): New.  Update all uses of CPSR_T to
	call this function.
	(arm_pc_is_thumb): Add a gdbarch argument.  Update all callers.
	Check is_m after force-mode.
	(arm_gdbarch_init): Check the binary before the target description.
	Add check for M profile attribute.  If we have an M-profile device,
	but no target register description, use arm-with-m.  Recognize the
	new org.gnu.gdb.arm.m-profile feature and its xpsr register.
	(_initialize_arm_tdep): Call initialize_tdesc_arm_with_m.
	* arm-tdep.h (XPSR_T): Define.
	(struct gdbarch_tdep): Add is_m member.
	* features/arm-m-profile.xml, features/arm-with-m.c,
	features/arm-with-m.xml: New files.

	doc/
	* gdb.texinfo (ARM Features): Document
	org.gnu.gdb.arm.m-profile.

3 files changed, 73 insertions, 0 deletions

diff --git a/gdb/features/arm-m-profile.xml b/gdb/features/arm-m-profile.xml
new file mode 100644
index 0000000..b88e9e6
--- /dev/null
+++ b/gdb/features/arm-m-profile.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2010 Free Software Foundation, Inc.
+
+     Copying and distribution of this file, with or without modification,
+     are permitted in any medium without royalty provided the copyright
+     notice and this notice are preserved.  -->
+
+<!DOCTYPE feature SYSTEM "gdb-target.dtd">
+<feature name="org.gnu.gdb.arm.m-profile">
+  <reg name="r0" bitsize="32"/>
+  <reg name="r1" bitsize="32"/>
+  <reg name="r2" bitsize="32"/>
+  <reg name="r3" bitsize="32"/>
+  <reg name="r4" bitsize="32"/>
+  <reg name="r5" bitsize="32"/>
+  <reg name="r6" bitsize="32"/>
+  <reg name="r7" bitsize="32"/>
+  <reg name="r8" bitsize="32"/>
+  <reg name="r9" bitsize="32"/>
+  <reg name="r10" bitsize="32"/>
+  <reg name="r11" bitsize="32"/>
+  <reg name="r12" bitsize="32"/>
+  <reg name="sp" bitsize="32" type="data_ptr"/>
+  <reg name="lr" bitsize="32"/>
+  <reg name="pc" bitsize="32" type="code_ptr"/>
+  <reg name="xpsr" bitsize="32" regnum="25"/>
+</feature>
diff --git a/gdb/features/arm-with-m.c b/gdb/features/arm-with-m.c
new file mode 100644
index 0000000..b188f57
--- /dev/null
+++ b/gdb/features/arm-with-m.c
@@ -0,0 +1,35 @@
+/* THIS FILE IS GENERATED.  Original: arm-with-m.xml */
+
+#include "defs.h"
+#include "osabi.h"
+#include "target-descriptions.h"
+
+struct target_desc *tdesc_arm_with_m;
+static void
+initialize_tdesc_arm_with_m (void)
+{
+  struct target_desc *result = allocate_target_description ();
+  struct tdesc_feature *feature;
+  struct tdesc_type *field_type, *type;
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.arm.m-profile");
+  tdesc_create_reg (feature, "r0", 0, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r1", 1, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r2", 2, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r3", 3, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r4", 4, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r5", 5, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r6", 6, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r7", 7, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r8", 8, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r9", 9, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r10", 10, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r11", 11, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r12", 12, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "sp", 13, 1, NULL, 32, "data_ptr");
+  tdesc_create_reg (feature, "lr", 14, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "pc", 15, 1, NULL, 32, "code_ptr");
+  tdesc_create_reg (feature, "xpsr", 25, 1, NULL, 32, "int");
+
+  tdesc_arm_with_m = result;
+}
diff --git a/gdb/features/arm-with-m.xml b/gdb/features/arm-with-m.xml
new file mode 100644
index 0000000..227b920
--- /dev/null
+++ b/gdb/features/arm-with-m.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2010 Free Software Foundation, Inc.
+
+     Copying and distribution of this file, with or without modification,
+     are permitted in any medium without royalty provided the copyright
+     notice and this notice are preserved.  -->
+
+<!DOCTYPE target SYSTEM "gdb-target.dtd">
+<target>
+  <xi:include href="arm-m-profile.xml"/>
+</target>